板蓝根生物学特性及丰产栽培技术研究

以板蓝根（Isatis indigtica Fort）为试验材料，选择优良品种进行板蓝根丰产栽培技术的研究。结果表明：疏松肥沃、排水良好、含腐殖质丰富的沙质土壤或轻壤土为最适土壤条件；白天18~23℃，夜间13~18℃地温18℃左右为最适生长温度；土壤水分保持在60%~80%，空气湿度在80%~90%为最佳水分和湿度条件；氮磷钾的最佳施用比例为2.5:1:4。

The Biological Characteristics and the High Yield Culture Technology of Isatis indigtica Fort

Isatis indigtica fort was taken for experimental material，and improved variety was chosen to carry out an investigation into the high yield culture technology of Isatis indigtica fort. The result indicated that the optical soil condition is light soil or sandy soil which is loosen,good in drainage and plentiful humus；the optical growth temperature is 18~23℃ on day，13~18℃ at night，soil temperature is 18℃；the optical soil water is better kept at 60%~80% and air humidity is 80%~90%；the optical proportion of fertilizer（N,P,K）is 2.5:1:4.